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Sci Rep

Title:		"Time series analysis of the air pollution around Ploiesti oil refining complex, one of the most polluted regions in Romania"
Author(s):		Bodor K; Szep R; Bodor Z;
Address:		"Faculty of Natural Sciences, Doctoral School of Chemistry, University of Pecs, Ifjusag 6, 7624, Pecs, Hungary. Department of Bioengineering, Faculty of Economics, Socio - Human Sciences and Engineering, Sapientia Hungarian University of Transylvania, Piata Libertatii 1, 530104, Miercurea Ciuc, Romania. Institute for Research and Development for Hunting and Mountain Resources, str. Progresului 35B, 530240, Miercurea Ciuc, Romania. Department of Bioengineering, Faculty of Economics, Socio - Human Sciences and Engineering, Sapientia Hungarian University of Transylvania, Piata Libertatii 1, 530104, Miercurea Ciuc, Romania. bodorzsolt@uni.sapientia.ro"
Journal Title:		Sci Rep
Year:		2022
Volume:		20220712
Issue:		1
Page Number:		11817 -
DOI:		10.1038/s41598-022-16015-7
ISSN/ISBN:		2045-2322 (Electronic) 2045-2322 (Linking)
Abstract:		"Refineries and petrochemical industries are known to be the principal sources of emissions for a number of air pollutants, such as Volatile Organic Compounds (VOCs), greenhouse gases and particulate matter, which negatively affect the air quality. The primary goal of this research was the time series analysis of PM(2.5), PM(10), As, Cd, Ni, Pb, benzene, toluene, ethylbenzene, o-xylene, m-xylene, p-xylene, CO, NO, NO(2), NO(x), SO(2) and O(3) over an eleven-year period (2009-2019) and the connection between air pollution and meteorological parameters (air temperature, precipitation quantity and relative humidity). Regarding the pollution level of the major pollutants, the minimum pollution levels, except SO(2) and O(3), were recorded during warmer periods, meanwhile increased levels, were detected during the cold period (in winter). The air pollutants' concentration and distribution are affected by meteorological parameters, such as wind speed and direction, rainfall or even relative humidity. Therefore, the highest concentrations in the winter season were 1.25 times higher than in autumn, 1.3 times higher than the average annual value, 1.57 times higher than in spring and 1.79 times higher than in summer. Monthly variation of O(3) showed lower concentration during winter (27.62 microg/m(3)) and higher in summer (46.42 microg/m(3)). Based on the statistical analysis, a significant Spearman correlation was detected between the studied air pollutants and meteorological parameters, and according to the Principal Component Analysis (PCA) and cluster analysis, some common sources were also detected"
Keywords:		*Air Pollutants/analysis *Air Pollution/analysis Environmental Monitoring Romania Time Factors;
Notes:		"MedlineBodor, Katalin Szep, Robert Bodor, Zsolt eng Research Support, Non-U.S. Gov't England 2022/07/14 Sci Rep. 2022 Jul 12; 12(1):11817. doi: 10.1038/s41598-022-16015-7"